/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package com.inspur.edp.lcm.metadata.common.configuration;

import com.inspur.edp.lcm.metadata.api.entity.vendor.VendorConfig;
import com.inspur.edp.lcm.metadata.api.exception.ErrorCodes;
import com.inspur.edp.lcm.metadata.api.exception.LcmConfigResolveDevException;
import com.inspur.edp.lcm.metadata.common.SerializerUtils;
import com.inspur.edp.lcm.metadata.common.Utils;
import org.springframework.util.StringUtils;

import java.io.File;

/**
 * desc
 *
 * @author liangff
 * @since 0.1.0
 * 2024/1/16
 */
public class VendorConfigLoader {
    private final String VENDOR_CONFIG_FILE = "config/platform/dev/main/vendor_config.json";

    private String absoluteFilePath;

    private static VendorConfigLoader instance;

    public static VendorConfigLoader getInstance() {
        if (instance == null) {
            instance = new VendorConfigLoader();
        }
        return instance;
    }

    private VendorConfig vendorConfig;

    public String getAbsoluteFilePath() {
        if (!StringUtils.hasLength(absoluteFilePath)) {
            absoluteFilePath = Utils.getAbsoluteConfigFilePath(VENDOR_CONFIG_FILE);
        }
        return absoluteFilePath;
    }

    public VendorConfig getVendorConfig() {
        if (vendorConfig == null) {
            VendorConfig config;
            try {
                 config = SerializerUtils.readFile(new File(getAbsoluteFilePath()), VendorConfig.class);
            } catch (Exception e) {
                throw new LcmConfigResolveDevException(e, ErrorCodes.ECP_CONFIG_RESOLVE_DEV_0002, getAbsoluteFilePath());
            }
            config.validate();
            vendorConfig = config;
        }
        return vendorConfig;
    }
}
